1 files changed, 48 insertions, 0 deletions
diff --git a/include/vcl/filter/PDFiumLibrary.hxx b/include/vcl/filter/PDFiumLibrary.hxx
index b9bceabb8acf..ffc70874c19b 100644
--- a/include/vcl/filter/PDFiumLibrary.hxx
+++ b/include/vcl/filter/PDFiumLibrary.hxx
@@ -17,11 +17,16 @@
 #include <memory>
 #include <rtl/instance.hxx>
 #include <vcl/dllapi.h>
+#include <vcl/checksum.hxx>
+
+#include <fpdf_doc.h>
 
 namespace vcl
 {
 namespace pdf
 {
+class PDFiumDocument;
+
 class VCL_DLLPUBLIC PDFium final
 {
 private:
@@ -33,6 +38,49 @@ public:
     ~PDFium();
 };
 
+class VCL_DLLPUBLIC PDFiumPage final
+{
+private:
+    FPDF_PAGE mpPage;
+
+private:
+    PDFiumPage(const PDFiumPage&) = delete;
+    PDFiumPage& operator=(const PDFiumPage&) = delete;
+
+public:
+    PDFiumPage(FPDF_PAGE pPage)
+        : mpPage(pPage)
+    {
+    }
+
+    ~PDFiumPage()
+    {
+        if (mpPage)
+            FPDF_ClosePage(mpPage);
+    }
+
+    /// Get bitmap checksum of the page, without annotations/commenting.
+    BitmapChecksum getChecksum();
+};
+
+class VCL_DLLPUBLIC PDFiumDocument final
+{
+private:
+    FPDF_DOCUMENT mpPdfDocument;
+
+private:
+    PDFiumDocument(const PDFiumDocument&) = delete;
+    PDFiumDocument& operator=(const PDFiumDocument&) = delete;
+
+public:
+    PDFiumDocument(FPDF_DOCUMENT pPdfDocument);
+    ~PDFiumDocument();
+
+    int getPageCount();
+
+    std::unique_ptr<PDFiumPage> openPage(int nIndex);
+};
+
 struct PDFiumLibrary : public rtl::StaticWithInit<std::shared_ptr<PDFium>, PDFiumLibrary>
 {
     std::shared_ptr<PDFium> operator()() { return std::make_shared<PDFium>(); }